CN107973969A - A kind of high-density polyethylene composition and preparation method thereof - Google Patents
A kind of high-density polyethylene composition and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2323/08—Copolymers of ethene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The present invention relates to polymer modification field, more particularly to a kind of high-density polyethylene composition and preparation method thereof, it is made of following components by weight percent：100 parts of high density polyethylene (HDPE), 15 ~ 30 parts of ethylene-vinyl acetate copolymer, 15 ~ 45 parts of glass fiber powder, 10 ~ 35 parts of high mesh number calcium carbonate, 10 ~ 20 parts of toughener, 0.25 ~ 0.5 part of nucleator, 0.4 ~ 0.8 part of lubricant, 0.2 ~ 0.3 part of coupling agent, 0.15 ~ 0.4 part of antioxidant.Present invention process is simple, is easily produced in enormous quantities, and the high-density polyethylene composition excellent combination property prepared, shrinking percentage is low, can be used in high-end automobile using as bumper.
Description
Technical field：
The present invention relates to polymer modification field, more particularly to a kind of high-density polyethylene composition and its preparation side
Method.
Background technology：
High density polyethylene (HDPE) due to cheap, it is easily processed into type and its with density it is low, it is resistant to chemical etching and itself
The advantages that excellent physical and mechanical property, its application is very extensive, becomes one of general plastic with fastest developing speed.
However, easily shunk after polyethylene formation, and mechanical property is poor.
The content of the invention：
It is an object of the invention to provide a kind of high-density polyethylene composition and preparation method thereof.
This high-density polyethylene composition of the present invention, is made of following components by weight percent：
Above-specified high density polyethylene is two or more copolymer high density polyethylene compounding use.
Above-mentioned ethylene-vinyl acetate copolymer melt index >=20g/10min (220 DEG C, 10kg).
Above-mentioned toughener for methyl methacrylate-butadiene-styrene terpolymer (MBS), styrene-ethylene-
The two compounding use of butadiene-styrene copolymer (SEBS).
The feeding manner of above-mentioned glass fiber powder is carried out at the same time by main feeding and side feeding, and mass ratio feeds for main feeding
Amount:Side feeding inlet amount=3:2；Glass fiber powder moisture≤0.1%, oil absorption≤25g/100g, draw ratio
For 50.
The particle diameter of above-mentioned high mesh number calcium carbonate is in 3000~5000 mesh.
Above-mentioned nucleator is metal carboxylate nucleator.
Above-mentioned lubricant is zinc stearate, ethylene bis stearic acid amide (EBS), white oil compounding use.
Above-mentioned coupling agent is gamma-aminopropyl-triethoxy-silane (KH550).
Above-mentioned antioxidant is four [β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol esters (antioxidant 1010)
With three [2,4- di-tert-butyl-phenyls] phosphite ester (irgasfos 168) compounding uses.
The preparation method of above-specified high density polyethylene composition is as follows：
The first step：15~45 parts of glass fiber powders are weighed in high-speed mixer A, are subsequently added into 0.2~0.4 part of lubricant
Mixing 20~30 minutes, 2/5 amount for taking out the glass fiber powder mixed afterwards are fed for side feeding, and 3/5 amount is used for
The charging of main feeding, mixes 20~30 minutes followed by 10~35 parts of high mesh number calcium carbonate are weighed in high-speed mixer A.High mixer
200~300 revs/min of the rotating speed of A, 50~70 DEG C of temperature.
Second step：Weigh 100 parts of high density polyethylene (HDPE)s, 15~30 parts of ethylene-vinyl acetate copolymers, 25~45 parts of toughness reinforcings
Agent is subsequently added into 0.25~0.5 portion of nucleator in high-speed mixer B, and 0.2~0.3 part of coupling agent mixes 20~30 minutes.It is high
200~300 revs/min of the rotating speed of mixed machine B, 50~70 DEG C of temperature.
3rd step：Glass fiber powder in high-speed mixer A and calcium carbonate mixture are added in high-speed mixer B,
0.15~0.4 part of antioxidant is added to mix 20~30 minutes.It is eventually adding 0.2~0.4 part of 20~30 points of mix lubricant
Clock.200~300 revs/min of the rotating speed of high mixer B, 50~70 DEG C of temperature.
4th step：The material that above-mentioned 3rd step is mixed adds wire drawing in double screw extruder and is granulated, cools down, fills bag.It is double
The temperature of screw extruder be followed successively by from feeding section to head 170 DEG C, 195 DEG C, 215 DEG C, 220 DEG C, 220 DEG C, 225 DEG C, 225
℃、215℃、215℃、210℃.Screw diameter is 75 millimeters, screw slenderness ratio 44.
The excellent part of the present invention：
1st, the present invention by add glass fiber powder master feeding at the same time feed and with high mesh number calcium carbonate, ethene-vinegar
Sour ethylene copolymer compounding use, calcium carbonate powder are evenly affixed to glass fiber powder and ethylene-vinyl acetate copolymer surface,
Specific cage structure is formed, greatly enhances the mechanical property between composition, finally obtains the poly- second of excellent combination property
Alkene composite material, while the shrinking percentage of composite polyethylene material is greatly reduced.
2nd, present invention defines glass fiber powder moisture≤0.1%, oil absorption≤25g/100g, extraordinary glass fibers
Dimension powder addition cause composite material processing when, melting mixing is uniform, be not in head block, tie rod broken strip the problems such as,
The composite material shrinking percentage and other mechanical properties being prepared are optimal.
3rd, the present invention is by adding nucleator composite polyethylene material good stability of the dimension after 24h~48h is molded
And keep less after-contraction after spraying.
4th, for the present invention by adding suitable toughener in polyethylene, the crystal property for influencing polyethylene is poly- so as to reduce
Ethene composite material shrinking percentage.
5th, present invention process is simple, is easily produced in enormous quantities.
Specific embodiment：
With reference to some embodiments, the invention will be further described with comparative example.Following embodiments are the present invention
Typical case, protection scope of the present invention are not limited thereto.Melt index according to ASTM D1238-10 perform, 230 DEG C,
Tested under the conditions of 2.16kg；Tensile property is performed according to ASTM D638-10, test speed 50mm/min；Bending property according to
ASTM D790-10 are performed, test speed 1.25mm/min；Chalpy impact performance is performed according to ASTM D256-10；Density
Performed according to ASTM D792-13；Material shrinking percentage is performed according to ASTM D955-08 and (i.e. surveyed after Injection moulded part cooling 24h
Examination).Spraying after-contraction performs according to ASTM D955-08 and (spraying post processing, spraying post processing is carried out after injection cools down 24h
Tested after 24h.Note：Spraying conditions are 85 DEG C, 40min).All of above test environment is：23 DEG C, 50%RH.
The main raw material(s) used in embodiment and comparative example is as follows：
Embodiment 1
The first step：15 parts of glass fiber powders are weighed in high-speed mixer A, are subsequently added into 0.08 part of lubricant stearic acid zinc
Mixed 20 minutes with 0.12 part of lubricant ethylene bis stearic acid amide, take out 2/5 amount of the glass fiber powder mixed afterwards
Feed for side feeding, mixed 20 minutes followed by 10 part of 5000 mesh calcium carbonate is weighed in high-speed mixer A.High mixer A's
200 revs/min of rotating speed, temperature 50 C.
Second step：Weigh 100 parts of high density polyethylene (HDPE)s, 15 parts of ethylene-vinyl acetate copolymers, 7 parts of toughener EM-
500A, 13 parts of toughener SEBS G1652 are subsequently added into 0.25 part of nucleator HPN-20E, 0.2 part of idol in high-speed mixer B
Join agent KH550 to mix 20 minutes.200 revs/min of the rotating speed of high mixer B, temperature 50 C.
3rd step：Glass fiber powder in high-speed mixer A and calcium carbonate mixture are added in high-speed mixer B,
0.06 part of antioxidant 1010 is added, 0.09 part of irgasfos 168 mixes 20 minutes.It is eventually adding 0.2 part of white oil 36# and mixes 20 points
Clock.200 revs/min of the rotating speed of high mixer B, temperature 50 C.
4th step：The material that above-mentioned 3rd step is mixed adds wire drawing in double screw extruder and is granulated, cools down, fills bag.It is double
The temperature of screw extruder be followed successively by from feeding section to head 170 DEG C, 195 DEG C, 215 DEG C, 220 DEG C, 220 DEG C, 225 DEG C, 225
℃、215℃、215℃、210℃.Screw diameter is 75 millimeters, screw slenderness ratio 44.Performance is shown in Table -1.
Embodiment 2
The first step：45 parts of glass fiber powders are weighed in high-speed mixer A, are subsequently added into 0.21 part of lubricant stearic acid zinc
Mixed 30 minutes with 0.19 part of lubricant ethylene bis stearic acid amide, take out 2/5 amount of the glass fiber powder mixed afterwards
Feed for side feeding, mixed 30 minutes followed by 35 part of 3000 mesh calcium carbonate is weighed in high-speed mixer A.High mixer A's
300 revs/min of rotating speed, temperature 70 C.
Second step：Weigh 100 parts of high density polyethylene (HDPE)s, 30 parts of ethylene-vinyl acetate copolymers, 10 parts of toughener EM-
500A, 5 parts of toughener SEBS G1652 are subsequently added into 0.5 part of nucleator HPN-20E, 0.3 part of coupling in high-speed mixer B
Agent KH550 is mixed 30 minutes.300 revs/min of the rotating speed of high mixer B, temperature 70 C.
3rd step：Glass fiber powder in high-speed mixer A and calcium carbonate mixture are added in high-speed mixer B,
0.22 part of antioxidant 1010 is added, 0.18 part of irgasfos 168 mixes 30 minutes.It is eventually adding 0.4 part of white oil 36# and mixes 30 points
Clock.300 revs/min of the rotating speed of high mixer B, temperature 70 C.
4th step：The material that above-mentioned 3rd step is mixed adds wire drawing in double screw extruder and is granulated, cools down, fills bag.It is double
The temperature of screw extruder be followed successively by from feeding section to head 170 DEG C, 195 DEG C, 215 DEG C, 220 DEG C, 220 DEG C, 225 DEG C, 225
℃、215℃、215℃、210℃.Screw diameter is 75 millimeters, screw slenderness ratio 44.Performance is shown in Table -1.
Embodiment 3
The first step：21 parts of glass fiber powders are weighed in high-speed mixer A, are subsequently added into 0.09 part of lubricant stearic acid zinc
Mixed 23 minutes with 0.17 part of lubricant ethylene bis stearic acid amide, take out 2/5 amount of the glass fiber powder mixed afterwards
Feed for side feeding, mixed 27 minutes followed by 12 part of 4000 mesh calcium carbonate is weighed in high-speed mixer A.High mixer A's
234 revs/min of rotating speed, 57 DEG C of temperature.
Second step：Weigh 100 parts of high density polyethylene (HDPE)s, 19 parts of ethylene-vinyl acetate copolymers, 7 parts of toughener EM-
500A, 5 parts of toughener SEBS G1652 are subsequently added into 0.29 part of nucleator HPN-20E, 0.24 part of idol in high-speed mixer B
Join agent KH550 to mix 24 minutes.209 revs/min of the rotating speed of high mixer B, 59 DEG C of temperature.
3rd step：Glass fiber powder in high-speed mixer A and calcium carbonate mixture are added in high-speed mixer B,
0.16 part of antioxidant 1010 is added, 0.19 part of irgasfos 168 mixes 22 minutes.It is eventually adding 0.23 part of white oil 36# mixing 21
Minute.262 revs/min of the rotating speed of high mixer B, 62 DEG C of temperature.
4th step：The material that above-mentioned 3rd step is mixed adds wire drawing in double screw extruder and is granulated, cools down, fills bag.It is double
The temperature of screw extruder be followed successively by from feeding section to head 170 DEG C, 195 DEG C, 215 DEG C, 220 DEG C, 220 DEG C, 225 DEG C, 225
℃、215℃、215℃、210℃.Screw diameter is 75 millimeters, screw slenderness ratio 44.Performance is shown in Table -1.
Embodiment 4
The first step：29 parts of glass fiber powders are weighed in high-speed mixer A, are subsequently added into 0.08 part of lubricant stearic acid zinc
Mixed 27 minutes with 0.12 part of lubricant ethylene bis stearic acid amide, take out 2/5 amount of the glass fiber powder mixed afterwards
Feed for side feeding, mixed 22 minutes followed by 18 part of 5000 mesh calcium carbonate is weighed in high-speed mixer A.High mixer A's
260 revs/min of rotating speed, 53 DEG C of temperature.
Second step：Weigh 100 parts of high density polyethylene (HDPE)s, 22 parts of ethylene-vinyl acetate copolymers, 12 parts of toughener EM-
500A, 7 parts of toughener SEBS G1652 are subsequently added into 0.37 part of nucleator HPN-20E, 0.28 part of idol in high-speed mixer B
Join agent KH550 to mix 28 minutes.287 revs/min of the rotating speed of high mixer B, 59 DEG C of temperature.
3rd step：Glass fiber powder in high-speed mixer A and calcium carbonate mixture are added in high-speed mixer B,
0.08 part of antioxidant 1010 is added, 0.09 part of irgasfos 168 mixes 29 minutes.It is eventually adding 0.21 part of white oil 36# mixing 20
Minute.220 revs/min of the rotating speed of high mixer B, 66 DEG C of temperature.
4th step：The material that above-mentioned 3rd step is mixed adds wire drawing in double screw extruder and is granulated, cools down, fills bag.It is double
The temperature of screw extruder be followed successively by from feeding section to head 170 DEG C, 195 DEG C, 215 DEG C, 220 DEG C, 220 DEG C, 225 DEG C, 225
℃、215℃、215℃、210℃.Screw diameter is 75 millimeters, screw slenderness ratio 44.Performance is shown in Table -1.
Embodiment 5
The first step：32 parts of glass fiber powders are weighed in high-speed mixer A, are subsequently added into 0.09 part of lubricant stearic acid zinc
Mixed 21 minutes with 0.17 part of lubricant ethylene bis stearic acid amide, take out 2/5 amount of the glass fiber powder mixed afterwards
Feed for side feeding, mixed 29 minutes followed by 21 part of 3000 mesh calcium carbonate is weighed in high-speed mixer A.High mixer A's
252 revs/min of rotating speed, 67 DEG C of temperature.
Second step：Weigh 100 parts of high density polyethylene (HDPE)s, 23 parts of ethylene-vinyl acetate copolymers, 7 parts of toughener EM-
500A, 4 parts of toughener SEBS G1652 are subsequently added into 0.33 part of nucleator HPN-20E, 0.23 part of idol in high-speed mixer B
Join agent KH550 to mix 27 minutes.290 revs/min of the rotating speed of high mixer B, temperature 70 C.
3rd step：Glass fiber powder in high-speed mixer A and calcium carbonate mixture are added in high-speed mixer B,
0.07 part of antioxidant 1010 is added, 0.09 part of irgasfos 168 mixes 27 minutes.It is eventually adding 0.26 part of white oil 36# mixing 25
Minute.250 revs/min of the rotating speed of high mixer B, temperature 60 C.
4th step：The material that above-mentioned 3rd step is mixed adds wire drawing in double screw extruder and is granulated, cools down, fills bag.It is double
The temperature of screw extruder be followed successively by from feeding section to head 170 DEG C, 195 DEG C, 215 DEG C, 220 DEG C, 220 DEG C, 225 DEG C, 225
℃、215℃、215℃、210℃.Screw diameter is 75 millimeters, screw slenderness ratio 44.Performance is shown in Table -1.
Embodiment 6
The first step：38 parts of glass fiber powders are weighed in high-speed mixer A, are subsequently added into 0.07 part of lubricant stearic acid zinc
Mixed 29 minutes with 0.14 part of lubricant ethylene bis stearic acid amide, take out 2/5 amount of the glass fiber powder mixed afterwards
Feed for side feeding, mixed 25 minutes followed by 29 part of 4000 mesh calcium carbonate is weighed in high-speed mixer A.High mixer A's
240 revs/min of rotating speed, 58 DEG C of temperature.
Second step：Weigh 100 parts of high density polyethylene (HDPE)s, 25 parts of ethylene-vinyl acetate copolymers, 9 parts of toughener EM-
500A, 6 parts of toughener SEBS G1652 are subsequently added into 0.39 part of nucleator HPN-20E, 0.24 part of idol in high-speed mixer B
Join agent KH550 to mix 29 minutes.290 revs/min of the rotating speed of high mixer B, 67 DEG C of temperature.
3rd step：Glass fiber powder in high-speed mixer A and calcium carbonate mixture are added in high-speed mixer B,
0.06 part of antioxidant 1010 is added, 0.09 part of irgasfos 168 mixes 20 minutes.It is eventually adding 0.22 part of white oil 36# mixing 22
Minute.260 revs/min of the rotating speed of high mixer B, temperature 70 C.
4th step：The material that above-mentioned 3rd step is mixed adds wire drawing in double screw extruder and is granulated, cools down, fills bag.It is double
The temperature of screw extruder be followed successively by from feeding section to head 170 DEG C, 195 DEG C, 215 DEG C, 220 DEG C, 220 DEG C, 225 DEG C, 225
℃、215℃、215℃、210℃.Screw diameter is 75 millimeters, screw slenderness ratio 44.Performance is shown in Table -1.
Embodiment 7
The first step：43 parts of glass fiber powders are weighed in high-speed mixer A, are subsequently added into 0.08 part of lubricant stearic acid zinc
Mixed 30 minutes with 0.18 part of lubricant ethylene bis stearic acid amide, take out 2/5 amount of the glass fiber powder mixed afterwards
Feed for side feeding, mixed 23 minutes followed by 34 part of 5000 mesh calcium carbonate is weighed in high-speed mixer A.High mixer A's
208 revs/min of rotating speed, 64 DEG C of temperature.
Second step：Weigh 100 parts of high density polyethylene (HDPE)s, 29 parts of ethylene-vinyl acetate copolymers, 12 parts of toughener EM-
500A, 8 parts of toughener SEBS G1652 are subsequently added into 0.46 part of nucleator HPN-20E, 0.27 part of idol in high-speed mixer B
Join agent KH550 to mix 28.4 minutes.200 revs/min of the rotating speed of high mixer B, 56.3 DEG C of temperature.
3rd step：Glass fiber powder in high-speed mixer A and calcium carbonate mixture are added in high-speed mixer B,
0.06 part of antioxidant 1010 is added, 0.09 part of irgasfos 168 mixes 20 minutes.It is eventually adding 0.27 part of white oil 36# mixing
26.7 minutes.289 revs/min of the rotating speed of high mixer B, 52 DEG C of temperature.
4th step：The material that above-mentioned 3rd step is mixed adds wire drawing in double screw extruder and is granulated, cools down, fills bag.It is double
The temperature of screw extruder be followed successively by from feeding section to head 170 DEG C, 195 DEG C, 215 DEG C, 220 DEG C, 220 DEG C, 225 DEG C, 225
℃、215℃、215℃、210℃.Screw diameter is 75 millimeters, screw slenderness ratio 44.Performance is shown in Table -1.
Table -1
As can be seen from the above embodiments, the high-density polyethylene composition excellent combination property that the present invention prepares, is received
Shrinkage is low, can be used in high-end automobile using as bumper.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, should all fall into the protection domain that claims of the present invention determines.
Claims (10)
1. a kind of high-density polyethylene composition, it is characterised in that be made of following components by weight percent：
100 parts of high density polyethylene (HDPE),
15 ~ 30 parts of ethylene-vinyl acetate copolymer,
15 ~ 45 parts of glass fiber powder,
10 ~ 35 parts of high mesh number calcium carbonate,
10 ~ 20 parts of toughener,
0.25 ~ 0.5 part of nucleator,
0.4 ~ 0.8 part of lubricant,
0.2 ~ 0.3 part of coupling agent,
0.15 ~ 0.4 part of antioxidant.
A kind of 2. high-density polyethylene composition according to claim 1, it is characterised in that：The high density polyethylene (HDPE) is
Two or more copolymer high density polyethylene compounding use.
A kind of 3. high-density polyethylene composition according to claim 1, it is characterised in that：The ethene-vinyl acetate
Copolymer melt index is more than or equal to 20g/10min under 220 DEG C, the test condition of 10kg.
A kind of 4. high-density polyethylene composition according to claim 1, it is characterised in that：The toughener is methyl-prop
E pioic acid methyl ester-butadiene-styrene terpolymer, both styrene-ethylene-butadiene-styrene copolymer compounding use.
A kind of 5. high-density polyethylene composition according to claim 1, it is characterised in that：The water of the glass fiber powder
Divide content≤0.1%, oil absorption≤25g/100g, draw ratio 50；The particle diameter of the high mesh number calcium carbonate is in 3000 ~ 5000 mesh.
A kind of 6. high-density polyethylene composition according to claim 1, it is characterised in that：The nucleator is carboxylate
Class nucleator.
A kind of 7. high-density polyethylene composition according to claim 1, it is characterised in that：The lubricant is stearic acid
Zinc, ethylene bis stearic acid amide and white oil compounding use.
A kind of 8. high-density polyethylene composition according to claim 1, it is characterised in that：The coupling agent is γ-ammonia
Propyl-triethoxysilicane.
A kind of 9. high-density polyethylene composition according to claim 1, it is characterised in that：The antioxidant for four [β-
（3,5- di-tert-butyl-hydroxy phenyls）Propionic acid] pentaerythritol ester and three [2,4- di-tert-butyl-phenyls] phosphite esters compounding make
With.
10. prepare the method for the high-density polyethylene composition described in claim 1, it is characterised in that include the following steps：
（1）15 ~ 45 parts of glass fiber powders are weighed in high-speed mixer A, are subsequently added into 0.2 ~ 0.4 part of mix lubricant 20 ~ 30
Minute, 2/5 amount for taking out the glass fiber powder mixed afterwards is fed for side feeding, and 3/5 amount is fed for main feeding,
Mixed 20 ~ 30 minutes followed by 10 ~ 35 parts of high mesh number calcium carbonate are weighed in high-speed mixer A；The rotating speed 200 of high mixer A ~
300 revs/min, 50 ~ 70 DEG C of temperature；
（2）100 parts of high density polyethylene (HDPE)s, 15 ~ 30 parts of ethylene-vinyl acetate copolymers are weighed, 25 ~ 45 parts of toughener are mixed in high speed
In conjunction machine B, 0.25 ~ 0.5 portion of nucleator is subsequently added into, 0.2 ~ 0.3 part of coupling agent mixes 20 ~ 30 minutes；The rotating speed of high mixer B
200 ~ 300 revs/min, 50 ~ 70 DEG C of temperature；
（3）Glass fiber powder in high-speed mixer A and calcium carbonate mixture are added in high-speed mixer B, added
0.15 ~ 0.4 part of antioxidant mixes 20 ~ 30 minutes；It is eventually adding 0.2 ~ 0.4 part of mix lubricant 20 ~ 30 minutes；High mixer B
200 ~ 300 revs/min of rotating speed, 50 ~ 70 DEG C of temperature；
（4）Will be above-mentioned（3）The material mixed adds wire drawing in double screw extruder and is granulated, cools down, fills bag；Double screw extruder
Temperature be followed successively by from feeding section to head 170 DEG C, 195 DEG C, 215 DEG C, 220 DEG C, 220 DEG C, 225 DEG C, 225 DEG C, 215 DEG C, 215
℃、210℃；Screw diameter is 75 millimeters, screw slenderness ratio 44.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921602X | 2016-10-21 | ||
| CN201610921602 | 2016-10-21 |
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| CN107973969A true CN107973969A (en) | 2018-05-01 |
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| CN201611201399.5A Pending CN107973969A (en) | 2016-10-21 | 2016-12-22 | A kind of high-density polyethylene composition and preparation method thereof |
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| CN109054146A (en) * | 2018-06-12 | 2018-12-21 | 苏州洛特兰新材料科技有限公司 | A kind of use for electronic products engineering plastics preparation method and applications |
| WO2021033054A1 (en) * | 2019-08-16 | 2021-02-25 | Sabic Global Technologies B.V. | Polyethylene with increased transparency and reduced haze |
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Application publication date: 20180501 |